1659544012 has 48 divisors (see below), whose sum is σ = 3518097408. Its totient is φ = 668678400.

The previous prime is 1659543973. The next prime is 1659544043. The reversal of 1659544012 is 2104459561.

It is a super-2 number, since 2×1659544012² = 5508172655530112288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849637 + ... + 851587.

It is an arithmetic number, because the mean of its divisors is an integer number (73293696).

Almost surely, 2^1659544012 is an apocalyptic number.

It is an amenable number.

1659544012 is an abundant number, since it is smaller than the sum of its proper divisors (1858553396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1659544012 is a wasteful number, since it uses less digits than its factorization.

1659544012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766 (or 3764 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 1659544012 is about 40737.5012979441. The cubic root of 1659544012 is about 1183.9397216010.

The spelling of 1659544012 in words is "one billion, six hundred fifty-nine million, five hundred forty-four thousand, twelve".